jane draper, bbc news. >> good to have you with us on "bbc world news." stay with us, if you can. still to come -- how indoor pollution affects the world support. poor. first though, in many parts of the u.s., 15-year-old can legally drive. in britain, you have to be 17. but there are suggestions that there could be changes if the young were banned from the roads at night. >> they say you only really learn to drive after you pass your test. >> that could potentially kill somebody. these young drivers tend to ignore that fact. looking at the road. >> there are claims that many are not properly prepared, even for things like driving in the dark. to combat that, researchers at cardiff university have suggested and nighttime driving band, along with a total alcohol ban and stopping them from carrying young passengers. >> it will not happen to me. >> while campaigners support some of the proposals, they believe others would be unworkable. tony david said's son was killed. >> it would not be able to carry any of their peers in the car. peer pressure becomes involved. no one goes out wit